Advice wanted

[sallygreen]

Hi!
Trying to choose little helper. Here are my variants https://www.bestadvisers.co.uk/window-cleaning-robot. Has anybody tried one them? Are they really good and can deal with their job?
Btw, open for other recommendations.
Thanks for your opinion and time.

[vic7767]

Trying to choose little helper

You might consider the middle priced vendor as well as the vendor with the most positive feedback.